Cheap flights from Idaho to London from £188
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/10. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Idaho to London
Keep the following information in mind while searching for Idaho to London flight deals. Data was last updated 12 September 2025.
Round-trip from | £436 |
---|---|
One-way from | £188 |
Popular in | June |
Cheapest in | October |
Average price | £585 |
Find flight deals from Idaho to London
Cheapest flights from Idaho to LondonExplore the most affordable flight options available from Idaho to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.
Explore the most affordable flight options available from Idaho to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.
Cheapflights Fare Finder
Use the filters below to find and compare flights from Idaho to London that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Idaho FallsLondon
IDA - LHR
IDALHR
Idaho Falls Fanning Field
Mon 6/10
13:15-09:50
1 stop13h 35m
London Heathrow
Wed 22/10
11:45-22:15
2 stops17h 30m
BoiseLondon
BOI - LHR
BOILHR
Boise Air Term. Gowen Fld
Tue 23/9
07:00-12:20
1 stop22h 20m
London Heathrow
Wed 1/10
09:30-11:39
2 stops33h 09m
BoiseLondon
BOI - LHR
BOILHR
Boise Air Term. Gowen Fld
Tue 30/9
09:45-11:50
2 stops19h 05m
London Heathrow
Fri 31/10
14:30-13:44
2 stops29h 14m
BoiseLondon
BOI - LHR
BOILHR
Boise Air Term. Gowen Fld
Tue 30/9
14:39-12:20
1 stop14h 41m
London Heathrow
Fri 31/10
11:10-13:29
2 stops32h 19m
Idaho FallsLondon
IDA - LHR
IDALHR
Idaho Falls Fanning Field
Mon 6/10
06:00-09:50
1 stop20h 50m
London Heathrow
Wed 22/10
06:30-22:15
2 stops22h 45m
Idaho FallsLondon
IDA - LHR
IDALHR
Idaho Falls Fanning Field
Mon 6/10
13:15-14:15
2 stops18h 00m
London Heathrow
Wed 22/10
06:30-18:13
2 stops18h 43m
BoiseLondon
BOI - LHR
BOILHR
Boise Air Term. Gowen Fld
Wed 15/10
07:00-12:20
1 stop22h 20m
London Heathrow
Wed 22/10
06:55-09:42
2 stops33h 47m
BoiseLondon
BOI - LHR
BOILHR
Boise Air Term. Gowen Fld
Tue 23/9
13:00-09:50
1 stop13h 50m
London Heathrow
Wed 1/10
06:15-18:16
2 stops19h 01m
SpokaneLondon
GEG - LHR
GEGLHR
Spokane
Wed 5/11
07:15-10:30
1 stop19h 15m
London Heathrow
Wed 19/11
06:20-18:58
2 stops20h 38m
SpokaneLondon
GEG - LHR
GEGLHR
Spokane
Wed 12/11
06:00-07:05
1 stop17h 05m
London Heathrow
Wed 3/12
06:20-18:56
2 stops20h 36m
Best time to book a flight from Idaho to London
Have a flexible travel schedule? Discover the best time to fly to London from Idaho with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Idaho to London
What is the cheapest month to book a flight from Idaho to London?
Currently, January is the cheapest month in which you can book a flight from Idaho to London (average of £112). Flying from Idaho to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from ID to LON?
Find hourly flight availability from Idaho to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 September 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to London as you normally would.
How much does it cost for a return flight from Idaho to London?
Related info for your journey
Find useful and relevant information for your journey from Idaho to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Idaho to London
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Idaho to London
Discover the top airline that operate flights from Idaho to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 12 September 2025.
Fly with Cheapflights
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How does Cheapflights help users find flights from Idaho to London?
When you search for this flight from Idaho to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Idaho to London?
Millions of users choose and trust Cheapflights to book the best flight deals from Idaho to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Idaho to London with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Idaho to London flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Idaho to London become cheaper?
Of course! You can now track prices for flights from Idaho to London and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.